Indwelling device

Abstract

An indwelling device that includes a hollow tubular body having a first end and a second end, and the first end is made of an elastic member.

1 . An indwelling device, comprising:
 a hollow tubular body having a first end and a second end, wherein   the first end is made of an elastic member.   
     
     
         2 . The indwelling device according to  claim 1 , wherein
 the hollow tubular body includes a larger inner diameter portion having a second inner diameter larger than a first inner diameter of the first end.   
     
     
         3 . The indwelling device according to  claim 2 , wherein
 the larger inner diameter portion is located at the second end.   
     
     
         4 . The indwelling device according to  claim 2 , wherein
 an inner diameter of the hollow tubular body increases gradually from the first inner diameter at the first end to the second inner diameter at the larger inner diameter portion.   
     
     
         5 . The indwelling device according to claim wherein
 the larger inner diameter portion is located between the first end and the second end, and a third inner diameter of the second end is smaller than the second inner diameter of the larger inner diameter portion.   
     
     
         6 . The indwelling device according to  claim 5 , wherein
 an inner diameter of the hollow tubular body increases gradually from the first inner diameter at the first end to the second inner diameter at the larger inner diameter portion, and decreases gradually from the second inner diameter at the larger inner diameter portion to the third inner diameter at the second end.   
     
     
         7 . The indwelling device according to claim wherein
 the larger inner diameter portion includes a braid configured with multiple wires wound in multiple directions.   
     
     
         8 . The indwelling device according to  claim 7 , wherein
 the larger inner diameter portion further includes a resin covering the braid.   
     
     
         9 . The indwelling device according to any one of  claim 7 , wherein
 at least a part of the braid is made of a radiopaque material.   
     
     
         10 . The indwelling device according to  claim 7 , wherein
 the larger inner diameter portion is reducible in diameter in a housing in which the indwelling device is accommodated and increases in diameter automatically when the indwelling device is separated from the housing.   
     
     
         11 . The indwelling device according to  claim 10 , wherein
 the housing is a catheter.   
     
     
         12 . The indwelling device according to  claim 1 , comprising a first check valve provided at the first end. 
     
     
         13 . The indwelling device according to  claim 12 , wherein
 the first check valve extends from the first end toward the second end and toward a center of the indwelling device in a cross section of the indwelling device perpendicular to a longitudinal direction of the hollow tubular body.   
     
     
         14 . The indwelling device according to  claim 13 , wherein
 the first check valve has a mortal shape extending over an entire circumference in the cross section of the indwelling device.   
     
     
         15 . The indwelling device according to  claim 12 , comprising a second check valve provided at the second end. 
     
     
         16 . The indwelling device according to  claim 1 , wherein
 the elastic member is polyurethane elastomer.   
     
     
         17 . The indwelling device according to  claim 1 , wherein
 the indwelling device, excluding the first end, is made of resin.   
     
     
         18 . The indwelling device according to  claim 1 , wherein
 the hollow tubular body, excluding the first end, is made of a resin material made of a biocompatible material.   
     
     
         19 . The indwelling device according to  claim 1 , wherein
 the first end is configured to aspire a lesion of an affected part of a human body using negative pressure inside the indwelling device generated using an aspirator.   
     
     
         20 . The indwelling device according to  claim 1 , wherein
 the first end is configured to necrotize the lesion using elastic force of the first end.